Grading machine



1935. v c. A. PEDERSON 2,011,526

GRADING MACHINE Filed Aug. 6, 1954 2 Sheets-Sheet l ATTOR N EY Aug. 13, 1935.

C. A. PEDERSON GRADING MACHINE Filed Aug. 6, 1934 2 Sheets-Sheet 2 ATTO R N EY Patented Aug. 13, 1935 U NIT D S AT ret eat QFFlC-I GReDING MACHINE I Carl A. Pederson, Bode, Iowa Application August6, 1934, Serial No. 738,698

7 Claims. (01. 37-143) This invention relates to road'gradi ng machines and itsgeneral object is to provide an auxiliary supporting device for'the scraper blade of a machinejwhich is primarily designed to supportthe end of a blade when scraping the sides of a road banking or ditching the same, in order to amply support the b'la'de and to relieve strain from the main supporting means, as well as toenable efficient operation of the blade regardless of its angle or the remoteness of the end thereof from the main'supporting means. 1

A further object of the'invention is to provide an auxiliary supporting device or truck'to support the end of a scraper blade, which is simple in construction, inexpensive to manufacture, easy toapply to the blade, and is extremely efiicient in use and service. V This invention also consists in certainother features of construction and in the combination and arrangement of the several parts, to be herematter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had tothe accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, andin which:

Figure l is a top plan view showing the application of my truck or blade supporting device to a road scraper.

Figure 2'is an enlarged fragmentary sectional view taken through'the truck with the latter secured to the blade.

Figure 3 is a sectional view taken approximately on lined- 3 of Figure 2, lookingin the d rection of thearrows. l Figure 4 is a sectional view taken approximate- 1y on line l-4 fof Figure' 2, looking in the direction of the arrows. if i Referringjto thedrawings in detail, the letter A indicates the frame'of a road scraping machine which includes the usual supporting and adjusting meansB forthe blade 0, the latter being capable of adjustment transversely of the machine and at various 'horizontal and vertical angles, as

The auxiliary supporting device 6r truck which forms thesubj ect matter of the 'present invention is" attachddirectly "to the blade and preferably has no other connection'with the machine, and

thebladecarri's' the's'ame, yet it amply supports the end of the blade to which it is attached in a manner which will be presentlyw described.

The device includes a frame made up of a pair of sections hingedly secured together and the other.

rear section includesa body plate i which has respect to the arms 2' and have their lower ends fixed to the outer endsthereof, as best shown in Figurez.

The outer orfree ends of the arms terminate in bearings within whichis secured an axle li for a-wheel tithe latterbeingjournaled to the axle for-rotation thereon, as will be apparent;

Thebody plate has formed thereon and ex- 1 tending forwardly therefrom a sleeve "l whichis disposed between and 'alignedwith collars 8. for

cooperation therewith to receive a hinge pin 9 for hingedly securing the front section to the rear section, and the collars 8 are formed on the upper ends of th'e'lower arms in of the front section whichlikewise'have secured thereto angle brackets i! that rise therefrom forboopera- -tive association with the vertical portions of the angle brackets 3.: v v

Bridging the vertical portions of the brackets 3 and l l are plates 52 which act tohold the upper ends of. the vertical portions fixed with respect to each other, and each of the vertical portions have secured thereto bearings '13 arranged-in aligned pairs. for the purpose of receiving the 'trunnions M of blocks l5,3one of which has arranged therein a bore to rotatably. receive one endof a screwiii that is heldagainst'endwise 'movement in its block through the instrumentality of collars ii. The screw isthreadedlymounted in the other block and has secured to the free.

end thereof a handle l8, 'whereby the sections of the truck can be adjusted with respect'to each The front section likewise includes upper, arms is which have their upper ends secured to the vertical portions of the brackets I l; and the :upper arms H as well as the arms 4 may be shaped in I'OlllldBd'1fOl'IIlfilliOIl to cooperate withthevertical portions in providing the bearings l3 torthetrunnions was clearlyshown in Figures 2and3.

' The lower ends. of the arms !9 are fixed to the arms ill and the lower ends of the arms Iii terfor a shoe that is pivotally associated with the.

front section as clearly shown in Figure 2. v

The shoe includes an elongated body 22 having a plate 23 secured to theupper surface thereof and the plate has formedthereon a bearing 24 to'receive the pivot pin 2|. It will be noted that the ends of the body 22 are curved upon themselves and the forwardcurved portion is relatively largerthan the rearward portion, but

. both of the portions as well as the body has formed on the longitudinal edges thereof ribs 25 that provide a channel to accommodate a, traction chain, the latterbeing continuousand is movable about the track provided by'the body, the curved portionsand'the ribs 25, aswill be'apparent upon inspection of Figures 2 and 4.

The pivot 'pin'ZI has oneend threaded to accornmodate a nut as best shown in Figure-4,

therefore this pin is removable and has secured.

to one end thereof a bracingstrip fl which has "its opposite end terminating into a clamping bracket 28 that includes'parallel jaws spaced a V relatively greatdistance apart to loosely receive the'bladeC, one of the jaws being threaded to receive a set screw 29 whereby the bracket-28 can be fixed, to the blade when the bracing strip is in 'ofthe blade isbroughtabout through the in-' use as clearly shown in Figure 2. 'Itwill'of course be'understood that-the bracing strip may be adjustable longitudinally and any well known means may'be employed for that purpose.

The body plate -I is provided With-an opening through which extends the threaded stud 30 of a forked member 3l which is secured to the body .plate'l'through the instrumentality of nuts 32 that arereceiv'ed b'y the stud 30 as .shown in Figure 2, andthe arms of the forked member are disposed upon opposite sides of the blade C "which together with, the arms have arranged therein openings, to accommodate a connection 33-for securing the 'forkedmember 3| to the blade.

x From the. above'description and disclosure of V the-drawings, it will be" obvious that I have provided. an auxiliary supportingdevice or truck fora scraper blade of. a road grading machine which is not only capable of suporting the end of the blade regardlessof the angle of the blade or theremote'ness of its end from the main supporting means but is capable of adjustment to cooperate with the main adjusting means of the blade in order to support the latter regardless of" the position thereof. The adjustmentof the end Strumentality of the screw l6 which is rotated by vention will be-readily'apparent.

its handle l8 to vary the relative positionsof the front and rear. sections of the truck, it being apparent that the supported end of'the blade can be-raised or lowered as the occasion demands.

It is thought from the foregoing description that ,the'advantages and novel features of my ing 'I desire it to be'understood that I may make changes inithe'construction and in the combinawithin the scope of scraper blade, an auxiliarysupporting device for the blade comprising a frame including a pair of sections, means hingedly securing the sections together, ground engaging. means for each section, means for adjusting the sections with respect to each other, and means carried by each of the sections for connection with the blade.

3. In a road grading ,machine including a scraper blade, an auxiliary supporting'device for the blade comprisinga frame including a pair of sections, ground engaging means for the sections and including awheel and caterpillar means,

means. for adjusting the sections with respect to each other, and means of connection between each of said sections and the blade.

4. In a road grading machine including a scraper blade, anauxiliary supporting device for the blade comprising a. frame including a pair of sections, means hingedly securing the sections together, meansincluding a screw for adjusting the sectionswith respect to each other, a wheel for one of said sections, a shoe, for the other section and including caterpillar 'means, and I means carried by each section for connection with 25 the blade.

5. In a road grading machine including a.

scraper blade, an auxiliary supporting device for theblade comprising a front section and a rear section, a body plate included in the rear sec- '30 tion and being hingedly securedto the front section for connecting the sections together, screw means for adjusting the sections with respect to each other, a wheel for the rear sectiorna shoe forthe front section and including an end- .less ground engagingchain, means depending from the body plate for connection with the blade, and means having connection with the front section and blade respectively.

6. In a road grading -machine including a scraper blade, an auxiliary supporting device for the blade comprising a frame including a pair of sections, bracketsfor each section and in;

cluding upright portions, screw means having connection with the upright portions foradjust-Q ing the sections with'respect to each other, rearwardly and forwardly directed. arms for each section, a wheel having connection with the rearwardly directed arms, a shoe pivotally connected with the forwardlydirected arms and. including caterpillar means, bracing means having 0011- nection with the shoe pivot means and the blade respectively, and means of connection between the frame and the blade.

'7. In a road grading machine including. a

scraper'bla'de, an'auxiliary supporting device for the blade comprising a frame including a front and a rear section, means pivotally connecting the sections together, upright means included .in'

each section and provided with bearings, blocks ,mounted in the bearings, screw means'journaled in one of said blocks andthreaded throughthe other for adjusting the sections with respect to each other, a handle forthe screw means, a

wheel for the rear section, a shoe for the front section and including an endless chain, meansfg for connecting the front section'to the blade, a body plate included in the rear section, and

carrying means for the blade and suspended from' the body.

. r L CARL A. PEDERS O N 

